The chart below shows the world's energy use in 2010. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The pie chart illustrates the global distribution of energy sources in 2010. Petroleum was by far the dominant source, contributing 39% of the total energy production. This was followed by gas and coal, which accounted for 23% and 22%, respectively. Nuclear energy made up a modest 9%, while hydropower comprised a mere 7% of the […]